/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors 
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.document.impl;

import java.util.List;
import javax.annotation.Nonnull;
import lombok.RequiredArgsConstructor;
import org.hisp.dhis.document.Document;
import org.hisp.dhis.document.DocumentService;
import org.hisp.dhis.document.DocumentStore;
import org.hisp.dhis.fileresource.FileResource;
import org.hisp.dhis.fileresource.FileResourceService;
import org.hisp.dhis.user.User;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

/**
 * @author Lars Helge Overland
 */
@Transactional
@RequiredArgsConstructor
@Service("org.hisp.dhis.document.DocumentService")
public class DefaultDocumentService implements DocumentService {
  private final FileResourceService fileResourceService;

  private final DocumentStore documentStore;

  // -------------------------------------------------------------------------
  // DocumentService implementation
  // -------------------------------------------------------------------------

  @Override
  public long saveDocument(Document document) {
    documentStore.save(document);

    return document.getId();
  }

  @Override
  public Document getDocument(long id) {
    return documentStore.get(id);
  }

  @Override
  public Document getDocument(String uid) {
    return documentStore.getByUid(uid);
  }

  @Override
  public void deleteFileFromDocument(Document document) {
    FileResource fileResource = document.getFileResource();

    // Remove reference to fileResource from document to avoid db constraint
    // exception
    document.setFileResource(null);
    documentStore.save(document);

    // Delete file
    fileResourceService.deleteFileResource(fileResource.getUid());
  }

  @Override
  public void deleteDocument(Document document) {
    documentStore.delete(document);
  }

  @Override
  public List<Document> getAllDocuments() {
    return documentStore.getAll();
  }

  @Override
  public int getDocumentCount() {
    return documentStore.getCount();
  }

  @Override
  public int getDocumentCountByName(String name) {
    return documentStore.getCountLikeName(name);
  }

  @Override
  public List<Document> getDocumentsByUid(@Nonnull List<String> uids) {
    return documentStore.getByUid(uids);
  }

  @Override
  public long getCountDocumentByUser(User user) {
    return documentStore.getCountByUser(user);
  }
}
